was in the presence of an enemy. He
shrugged his shoulders and turned toward the door.

"Well," he said, "we had better be getting off. Guerdon is a decent
fellow, but he always needs looking after. If he is bored for five
minutes, he gets sulky. If he is bored for a quarter of an hour, he
goes home. You never met Lord Guerdon before, I suppose?" he asked, as
he threw open the door.

They were men of nerve, both of them. Neither flinched. Rochester's
question had been asked in an absolutely matter-of-fact tone, and
Saton's reply was entirely casual. Yet he knew very well that it was
only since the coming of the great judge that Rochester had suddenly
realized that amongst the guests staying in his house, there was one
who might have been any sort of criminal.

"I have seen him in court," Saton remarked, with a slight smile, "and
of course I have seen pictures of him everywhere. Do not let me keep
you, please. I have some letters to write in my room."

Rochester went back to his guests. His brows were knitted. He was
unusually thoughtful. His wife, who was watching him, called him
across to the bridge table, where she was dummy.

"Well?" she asked. "What is it?"

Rochester looked down at her. The corners of his mouth slowly unbent.

"Have you ever heard," he whispered in her ear, "of the legend of the
Frankenstein?"

CHAPTER V

A MORNING WALK

"My dear Henry," Lady Mary said, a few days later, swinging round in
her chair from the writing-table, "whatever in this world induced you
to encourage that extraordinary person Bertrand Saton to settle down
in this part of the world?"

Rochester continued for a moment to gaze out of the window across the
Park, with expressionless face.

"My dear Mary," he said, "I did not encourage him to do anything of
the sort."

"You let him Blackbird's Nest," she reminded him.

"I had scarcely a reasonable excuse for refusing to let it," Rochester
answered. "I did not suggest that he should take it. I merely referred
him to my agents. He went to see old Bland the very next morning, and
the thing was arranged."

"I think," Lady Mary said deliberately, "that it is one of those cases
where you should have exercised a little more discrimination. This is
a small neighborhood, and I find it irritating to be continually
running up against people whom I dislike."

"You dislike Saton?" Rochester remarked, nonchalantly.

"Dislike is perhaps a strong word," his wife answere